Electrical fire in flight

Electrical fire: cut power first, then restore equipment one item at a time.

Steps:

1. Turn off master (battery) switch and alternator/generator switch (TP 1102). Removes all power, stops further shorting. Cost: lose lighting, comms, nav on that power.
2. Isolate fault: turn equipment back on one item at a time, significant wait between each. Shorting component can take time to heat up and smoulder again.

If:

• Burning smell returns after switching an item back on: see Trap.
• Fire generates acrid smoke: follow Aircraft Flight Manual smoke removal procedures for cabin fire (TP 1102).

Trap: last item switched on is not necessarily the cause.

Practice